Adding & Subtracting Fractions

Adding Fractions Unlike Denominators

100

Find the sum of 1/4 and 1/5

9/20

200

1/3 + 3/8

17/24

300

2/5 + 1/4

13/20

400

1/4 + 9/10

1 3/20

500

Sam baked pies for her family dinner. They ate 2/3 of the apple pie and 3/6 of the pumpkin pie. What fraction of the pies did they eat in all?

1 1/6

Subtracting Fractions Unlike Denominators

100

3/4 - 1/8

5/8

200

1/2 - 2/5

1/10

300

8 1/2 - 4 2/10

4 3/10

400

8 3/5 - 1 1/2

7 1/10

500

Abby had a bucket with 3 1/2 gallons of water in it. She placed the bucket in the sun and 1 1/4 gallons evaporated. How many gallons are left in the bucket?

2 1/4

Adding Fractions with Like Denominators

100

6/12 + 4/12

5/6

200

4/15 + 8/15

4/5

300

1/10 + 3/10 + 5/10

9/10

400

9/5 + 4/5

2 3/5

500

Add these two fractions and write your answer as a mixed number in simplest form 

11/12 + 7/12

1 1/2

Subtracting Fractions Like Denominators

100

9/11 - 5/11

4/11

200

7/8 - 3/8

1/2

300

3 2/5 - 1 3/5

1 4/5

400

9/10 - 1/10

4/5

500

Maya had a board that was 11/12 yards long. She cut off 5/12 yards for an art project. She then cut an additional 2/12 yards off the remaining piece to fix a shelf. How much of the board is left? Simplify your answer.

1/3 or 1/3 yards